Window-sash fastener.



A. J. STHAY. WINDOW SASH FASTBNER. APPLICATION FILED 11.2, 1914.

1,108,271 Patented Aug. 25, 1914.

17 I Q 9 1.5 Q Q m WITNESSES: 5/ L/ If??? a dgw By y d, fizz/M QM A TTOR/VE) TH f NdRRlS PETERS C0,. PHOTO-LITHO., WASHINGTON, D. C.

UNITED STATES PATENT OFFICE.

ALFRED J. STIIAY, O'E SEATTLE, WASHINGTON.

WINDOW SASI'I FASTENER.

T0 aZZ whom it may concern:

Be it known that I, ALFRED J. STI-IAY, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented. a certain new and useful Improvement in Window-Sash Fasteners, of which the following is a specification.

My invention relates to improvements in devices for fastening windows, and the object of my improvement is to provide a strong, simple and inexpensive window sash fastener which may be readily attached to any window of common form of construction and which is adapted to operate to lock both the lower and the upper sash of such windmv in their closed positions. 1 accomplish this object by devices illustrated. in the accompanying drawings in which:-

Figure 1 is a view in perspective of a window casing and portions of the upper and lower sashes of a window with one form of my window fastener associated therewith; Fig. 2 is a view in perspective of a detached portion of my invention showing its parts as disposed when the sashes of a window to which it is applied are unfastened, and Fig. 3 is a fragmentary view partly in side elevation and partly in vertical cross-section showing the relative positions of parts of my invention.

Briefly my invention comprises a pair of window sash fasteners that are adapted to be secured one on each of the opposite end portions of the top surface of the top rail of the lower sash of a window, each of such fasteners being pro sided with two pivotally mounted pawls, one of which pawls is adapted to project within and engage a notch provided in the window frame, while the other of such pawls in a similar manner is adapted to project within and engage a notch disposed in a vertical side-rail of the upper sash of said window whereby when such pawls are so engaged the upper sash of such window may not be moved downwardly nor can the lower sash be raised without removing said pawls from their engagement with their respective notches.

Referring to the drawings, in which like reference numerals indicate like parts, 5 is the frame of a window, of a common form of construction, within which is slidably disposed in the usual manner, an upper sash 6 and a lower sash 7.

Specification of Letters Patent.

Application filed March 2, 1914.

Patented Aug. 25, 1914;.

Serial No. 821,859.

Upon the top surface 10 of the end portion of said lower sash 7 is secured by screws 9 a base-plate 8 which is provided with two upwardly projecting lugs 11, 11 between which is pivotally mounted a pawl 12 which is adapted to be disposed with its free end leaning to project into and engage with a notch 13 that is provided in a plate let which is inlaid. and secured in the front surface of the side rail of the upper sash 6, while a similar pawl 15 is likewise pivoted between. two other lugs 16, 16 on same baseplate 8, which pawl 15 is removably disposed. to lean with its free end projecting within and engaging with a notch 17 formed in a plate 18 which is inlaid and secured in the side surface of the window frame 5; such position of said pawls 12 and 15 causing them to prevent any sliding movement of either the upper sash 6 or the lower sash 7.

(the lugs 11, 11 and the lugs 16, 16 are preferably formed to have their upper edges curved to be slightly eccentric with respect to the axis of the pivots of the pawls 12 and 15 respectively, as more clearly illustrated in 3, and the pawls 12 and 15 are each formed on both of their sides with a shoulder 19, 19 that is adapted to extend outwardly over their respective lugs, such shoulder 19 being adapted to engage with such eccentrically curved top edge to relieve the strain that otherwise would be brought upon the pivots of the pawls 12 and 15 in response to an attempt to move either of said window sashes while locked, and such shoulders 19 are adapted each to move away from the curved surface of its respective lug when the pawl is folded downwardly into an inoperative position, as shown in Fig. 2.

When the lower sash 7 and the upper sash 6 are in their closed positions, as illustrated in Fig. 1, then the lower sash 7 may be locked against upward movement by raising the pawl. 15 into engagement with the notch 17 in the plate 18, the weight of such pawl keeping it in a leaning engagement with such plate 1 1 and such lower sash, further, may be more securely locked against upward movement and the upper sash 6 may be locked against downward movement by raising the pawl 12 and causing it to engage in the notch 13 that is provided. in the plate 1 1. When it is desired to move either or both of the sashes 6 and 7, then the pawls 12 and 15 respectively, may

be folded downwardly on the base-plate 8, as more clearly shown in Fig. 2, the pivot of the pawl being lower than the pivot of the pawl 12 in order that such two pawls may fold more compactly on the baseplate 8.

In the drawings I have shown a form of fastener embodying my invention as associated with only one side of a window but it is manifest that if it be desired to attach such a fastener to each side of a window, thus to give double security, then, in such case, the two fasteners would, of course, differ from each other in an obvious manner to an extent to adapt one of them to be placed on the left hand side of a window while the other, as shown in the drawing, would be adapted to be placed on the right hand side thereof; thus a pair of fasteners would comprise both a right and a left hand fastener.

Obviously, the plates 14 and 18 might be lengthened and provided with a plurality of notches, similar to the notches 13 and 17,

.- whereby the lower sash and upper sash respectively, might be locked at difierent partially opened positions, and other changes may be made in the details of my invention without departing from the spirit thereof.

lVhat I claim is:

In a window sash fastener of the class described, a base-plate, a pair of lugs fiXed on said base-plate to project upwardly from the top surface thereof, the edges of the upper portion of said lugs being in the form of a semi-circle, a pawl having one of its ends pivotally mounted between said lugs so that its pivotal axis is disposed eccentrically with relation to said semi-circular.

edges of the upper portion of said lugs, said pawl being provided with shoulders formed to adapt them to engage with said semicircular edges of said lugs only when said pawl is moved to swing upwardly from a position parallel with said base-plate to a position of more than ninety degrees therefrom, whereby when said pawl is in the latter named position then said shoulders of said pawl may be supported directly by said lugs to relieve the strain on the pivots of said pawl.

In witness whereof, I, hereunto subscribe my name this 18th day of February A. D.,

ALFRED J. STHAY. \Vitnesses Roy 1n. THOMPSON, lVALLAon WILSON- fiopiel 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). O. 

